Scenarios represent components of a metabolic reaction network in which specific compounds are labeled as inputs and outputs. The metabolic network is assembled using biochemical reaction information associated with functional roles in subsystems to find paths through scenarios from inputs to outputs. Scenarios that are connected by linked inputs and outputs can be composed to form larger blocks of the metabolic network, spanning processes that convert transported nutrients into biomass components.

Select organisms to show whether paths are present for each scenario based on the organisms' genome annotations in subsystems.